nefarius/Nefarius.Peripherals.SerialPort
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Fixed SetCommState

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This commit is contained in:
Benjamin Höglinger-Stelzer
2022-10-03 17:58:42 +02:00
parent d04267250c
commit 91159c3643
2 changed files with 31 additions and 23 deletions
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Nefarius.Peripherals.SerialPort/SerialPort.cs
+30 -22
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@@ -3,9 +3,15 @@ using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using Windows.Win32;
using Windows.Win32.Devices.Communication;
using Windows.Win32.Foundation;
using Windows.Win32.Storage.FileSystem;
using Microsoft.Win32.SafeHandles;
using Nefarius.Peripherals.SerialPort.Win32PInvoke;
using COMMPROP = Nefarius.Peripherals.SerialPort.Win32PInvoke.COMMPROP;
using COMMTIMEOUTS = Nefarius.Peripherals.SerialPort.Win32PInvoke.COMMTIMEOUTS;
using COMSTAT = Nefarius.Peripherals.SerialPort.Win32PInvoke.COMSTAT;
using DCB = Windows.Win32.Devices.Communication.DCB;
namespace Nefarius.Peripherals.SerialPort
{
@@ -348,7 +354,7 @@ namespace Nefarius.Peripherals.SerialPort
var wo = new OVERLAPPED();
if (_online) return false;
_hPort = PInvoke.CreateFile(PortName, FILE_ACCESS_FLAGS.FILE_GENERIC_READ | FILE_ACCESS_FLAGS.FILE_GENERIC_WRITE, 0,
null, FILE_CREATION_DISPOSITION.OPEN_EXISTING, FILE_FLAGS_AND_ATTRIBUTES.FILE_FLAG_OVERLAPPED, null);
@@ -366,24 +372,24 @@ namespace Nefarius.Peripherals.SerialPort
commTimeouts.WriteTotalTimeoutConstant = SendTimeoutConstant;
commTimeouts.WriteTotalTimeoutMultiplier = SendTimeoutMultiplier;
portDcb.Init(Parity is Parity.Odd or Parity.Even, TxFlowCts, TxFlowDsr,
(int) UseDtr, RxGateDsr, !TxWhenRxXoff, TxFlowX, RxFlowX, (int) UseRts);
portDcb.BaudRate = BaudRate;
portDcb.ByteSize = (byte) DataBits;
portDcb.Parity = (byte) Parity;
portDcb.StopBits = (byte) StopBits;
portDcb.XoffChar = (byte) XoffChar;
portDcb.XonChar = (byte) XonChar;
portDcb.XoffLim = (short) RxHighWater;
portDcb.XonLim = (short) RxLowWater;
(int)UseDtr, RxGateDsr, !TxWhenRxXoff, TxFlowX, RxFlowX, (int)UseRts);
portDcb.BaudRate = (uint)BaudRate;
portDcb.ByteSize = (byte)DataBits;
portDcb.Parity = (DCB_PARITY)Parity;
portDcb.StopBits = (DCB_STOP_BITS)StopBits;
portDcb.XoffChar = (CHAR)(byte)XoffChar;
portDcb.XonChar = (CHAR)(byte)XonChar;
portDcb.XoffLim = (ushort)RxHighWater;
portDcb.XonLim = (ushort)RxLowWater;
if (RxQueue != 0 || TxQueue != 0)
if (!Win32Com.SetupComm(_hPort.DangerousGetHandle(), (uint) RxQueue, (uint) TxQueue))
if (!Win32Com.SetupComm(_hPort.DangerousGetHandle(), (uint)RxQueue, (uint)TxQueue))
ThrowException("Bad queue settings");
if (!Win32Com.SetCommState(_hPort.DangerousGetHandle(), ref portDcb))
if (!PInvoke.SetCommState(_hPort, portDcb))
ThrowException("Bad com settings");
if (!Win32Com.SetCommTimeouts(_hPort.DangerousGetHandle(), ref commTimeouts))
if (!Win32Com.SetCommTimeouts(_hPort.DangerousGetHandle(), ref commTimeouts))
ThrowException("Bad timeout settings");
_stateBrk = 0;
@@ -417,13 +423,15 @@ namespace Nefarius.Peripherals.SerialPort
_rxException = null;
_rxExceptionReported = false;
// TODO: utilize Task Parallel Library here
_rxThread = new Thread(ReceiveThread)
{
Name = "CommBaseRx", Priority = ThreadPriority.AboveNormal, IsBackground = true
Name = "CommBaseRx",
Priority = ThreadPriority.AboveNormal,
IsBackground = true
};
_rxThread.Start();
Thread.Sleep(1); //Give rx thread time to start. By documentation, 0 should work, but it does not!
@@ -514,9 +522,9 @@ namespace Nefarius.Peripherals.SerialPort
CheckOnline();
CheckResult();
_writeCount = toSend.GetLength(0);
if (Win32Com.WriteFile(_hPort.DangerousGetHandle(), toSend, (uint) _writeCount, out sent, _ptrUwo))
if (Win32Com.WriteFile(_hPort.DangerousGetHandle(), toSend, (uint)_writeCount, out sent, _ptrUwo))
{
_writeCount -= (int) sent;
_writeCount -= (int)sent;
}
else
{
@@ -568,7 +576,7 @@ namespace Nefarius.Peripherals.SerialPort
uint sent;
if (Win32Com.GetOverlappedResult(_hPort.DangerousGetHandle(), _ptrUwo, out sent, _checkSends))
{
_writeCount -= (int) sent;
_writeCount -= (int)sent;
if (_writeCount != 0) ThrowException("Send Timeout");
}
else
@@ -718,7 +726,7 @@ namespace Nefarius.Peripherals.SerialPort
throw new CommPortException("IO Error [002]");
}
eventMask = (uint) Marshal.ReadInt32(uMask);
eventMask = (uint)Marshal.ReadInt32(uMask);
if ((eventMask & Win32Com.EV_ERR) != 0)
{
uint errs;